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    <div class="refentry">
      <a id="scaleutility"></a>
      <div class="titlepage"></div>
      <div class="refnamediv">
        <h2>
          <span class="refentrytitle">scale</span>
        </h2>
        <p>scale — 
      Scale the amplitude of a sound file.
      <a id="IndexScaleUtility" class="indexterm"></a>
    </p>
      </div>
      <div class="refsect1">
        <a id="idp223999328"></a>
        <h2>Description</h2>
        <p>
        Takes a sound file and scales it by applying a gain, either
    constant or variable.  The scale can be specified as a multiplier,
    a maximum or a percentage of 0db.
    </p>
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      <div class="refsect1">
        <a id="idp224000672"></a>
        <h2>Syntax</h2>
        <pre class="synopsis"><span class="command"><strong>scale</strong></span> [OPTIONS ... ] infile</pre>
      </div>
      <div class="refsect1">
        <a id="idp224002656"></a>
        <h2>Initialization</h2>
        <p>
      Flags:

      </p>
        <div class="itemizedlist">
          <ul class="itemizedlist" style="list-style-type: disc; ">
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>A</em></span>
              = Generate an AIFF outout file.
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>W</em></span>
              = Generate an WAV outout file.
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>h</em></span>
              = Generate an outout file with no header.
          </p>
            </li>
            <li class="listitem">
              <p>
               -<span class="emphasis"><em>c</em></span>
              = Generate 8-bit signed_char sound samples.
         </p>
            </li>
            <li class="listitem">
              <p>
               -<span class="emphasis"><em>a</em></span>
              = Generate alaw sound samples.
          </p>
            </li>
            <li class="listitem">
              <p>
               -<span class="emphasis"><em>u</em></span>
              = Generate ulaw sound samples.
          </p>
            </li>
            <li class="listitem">
              <p>
               -<span class="emphasis"><em>s</em></span>
              = Generate short integer sound samples.
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>l</em></span>
              = Generate long (32 bit) integer sound samples.
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>f</em></span>
              = Generate floating point samples.
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>F arg</em></span>
              = Specifies the gain to be applied.  If arg is a
              floating point number that gain is applied uniformly to
              the input.  Alternatively it could be a file name which
              specifies a breakpoint file for varying the gain for
              different periods.
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>M fpnum</em></span>
              = Scales the input so the maximum absolute displacement
              is the value given.
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>P fpnum</em></span>
              = Scales the input so the maximum absolute displacement
              is the pencentage given of 0db.
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>R</em></span>
              = Continually rewrite the header while writing soundfile
              (WAV/AIFF). 
          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>H integer</em></span>
              = Show a "heart-beat" to indicate progress, in style 1,
              2 or 3.          </p>
            </li>
            <li class="listitem">
              <p>
              -<span class="emphasis"><em>N</em></span>
              = Alert call (usually ringing the bell) when finished.
          </p>
            </li>
            <li class="listitem">
              <p>
        		-<span class="emphasis"><em>o fname</em></span>
        		= output file name (default: test.wav)
        	</p>
            </li>
          </ul>
        </div>
        <p>

    </p>
      </div>
      <div class="refsect1">
        <a id="idp224025040"></a>
        <h2>Examples</h2>
        <p>

</p>
        <pre class="programlisting">
    <span class="emphasis"><em>scale</em></span> -s -W -F 0.96 -o out.wav sound.wav</pre>
        <p>


  		This creates a new sound file with a constant gain of
  		0.96.  It is particularly useful if the input file is
  		in floating point format.
  	</p>
      </div>
      <div class="refsect1">
        <a id="idp224027520"></a>
        <h2>Credits</h2>
        <p>Author: John ffitch</p>
        <p>1994</p>
      </div>
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